Monday, July 1, 2019

FormHasMethod extension in D365FO

FormHasMethod extension in D365FO

Validating FORM HasMethod on Run time, including Form Extension HasMethod also in D365 FO

Class:
Global
Method:
formHasMethod

COC ->

using  System.Object;
using  Microsoft.Dynamics.Ax.Xpp;
using  System.Reflection;
[ExtensionOf(classStr(Global))]
final class Global_Extension
{
    static boolean formHasMethod(FormRun _fromRun, IdentifierName _methodName)
    {
        boolean flag = next formHasMethod(_fromRun, _methodName);

        if (flag==false)
        {
            flag= Global::VerifyformExtensionHasMethod(_fromRun, _methodName);
        }

        return flag;
    }

    private static boolean VerifyformExtensionHasMethod(FormRun _formRun, IdentifierName _methodName)
    {
        try
        {
            System.Object[] extensions = ExtensionClassSupport::GetExtensionsOnType(_formRun.GetType(), true);

            if (extensions)
            {
               System.Type    formExtensionType;
               MethodInfo    mInfo;
           
                var  bindingFlags = BindingFlags::Public | BindingFlags::Static | BindingFlags::IgnoreCase;

                for (int i = 0; i < extensions.Length; i++)
                {
                    formExtensionType = extensions.GetValue(i);

                    var info = formExtensionType.GetMethods(bindingFlags);

                    for (int J = 0; J < info .get_Length(); J++)
                    {
                        mInfo= info .getValue(J);
                        if (mInfo.Name == _methodName)
                        {
                            return true;
                        }
                    }
                }
            }
        }
        catch (Exception::CLRError)
        {
            error(CLRInterop::getLastException().ToString());
        }

        return false;
    }

}

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